Hat mask



FIG. 1 is a top perspective view of a hat mask showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front elevated view thereof;

FIG. 4 is a rear elevated view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a right elevated view thereof;

FIG. 8 is a left elevated view thereof;

FIG. 9 is a cross-sectional view thereof taken along line 9-9 of FIG. 4;

FIG. 10 is a cross-sectional view thereof taken along line 10-10 of FIG. 4; and,

FIG. 11 is a top perspective view thereof, showing the hat mask in a mask configuration.

The dash-dash broken line showing of the hat depict the article environment associated with the claimed design and form no part of the claimed design. The dash-dot-dash broken lines illustrate a boundary line to the claimed design and form no part of the claimed design. The person outlined by broken lines assist to illustrate the hat mask in a position of use and form no part of the claimed design. 

CLAIM The ornamental design for a hat mask, as shown and described. 